| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | United Kingdom | 3 | |
| #3 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Chemical engineering | |
| #3 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Gas, coke and tar production | |
| #2 | Liquid hydrocarbon mixture production | |
| #3 | Water treatment | |
| #4 | Separation | |
| #5 | Working-up pitch |
| # | Name | Total Patents |
|---|---|---|
| #1 | Geissen Carl | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB279120A | Improvements relating to apparatus for the distillation of coal and other solid fuels | |
| GB274465A | Method of producing high-value oils from raw coal by low temperature distillation and hydrogenation | |
| GB271473A | Improvements relating to the production and conversion of oils | |
| CA288514A | Oil and conversion production |